/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package dio.policy;

import java.io.Serializable;
import java.security.Permission;
import java.security.PermissionCollection;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Iterator;

/**
 * @title Custom PermissionCollection
 * @author stanislav.smirnov@oracle.com
 */
public class DIOPermissionCollection extends PermissionCollection implements Serializable {

    static final long serialVersionUID = -6204212792516098049L;

    ArrayList<Permission> perms = new ArrayList<>();

    @Override
    public void add(Permission p) {
        perms.add(p);
    }

    @Override
    public boolean implies(Permission p) {
        Iterator<Permission> permissions = perms.iterator();
        while (permissions.hasNext()) {
            if (((Permission) permissions.next()).implies(p)) {
                return true;
            }
        }
        return false;
    }

    @Override
    public Enumeration<Permission> elements() {
        return Collections.enumeration(perms);
    }

    @Override
    public boolean isReadOnly() {
        return false;
    }
}
